grandness vs richness

grandness and richness both are nouns.

Word	Noun	Adjective	Verb	Adverb
grandness	Yes	No	No	No
richness	Yes	No	No	No

As nouns, grandness and richness are synonyms defined as:

Other synonyms of grandness include impressiveness, magnificence.

grandness (noun)	richness (noun)
the quality of being magnificent or splendid or grand	a strong deep vividness of hue
unusual largeness in size or extent or number	the property of a sensation that is rich and pleasing
splendid or imposing in size or appearance	the property of producing abundantly and sustaining vigorous and luxuriant growth
a prominent status	the property of being extremely abundant
	splendid or imposing in size or appearance
	the quality of having high intrinsic value
	abundant wealth